Time quoted Webb: "We don’t even try to prove that crime doesn’t pay ... sometimes it does." Specialized terminology was mentioned in every episode but rarely explained. Webb trusted the audience to determine the meanings of words or terms by their context, and Dragnet tried to avoid awkward, lengthy exposition that people would not use in daily speech. Some specialized terms such as "A.P.B." for "All Points Bulletin" and "M.O." for "Modus Operandi" were rarely used in popular culture before Dragnet introduced them to everyday America. While most radio shows used one or two sound-effect experts, Dragnet used five: a script clocking in at just under 30 minutes could require up to 300 effects. Accuracy was underlined: The exact number of footsteps from one room to another at Los Angeles police headquarters were mimicked, and when a telephone rang at Friday's desk, the listener heard the same ring as the telephones in Los Angeles police headquarters. A single minute of ".22 Rifle for Christmas" is a representative example of the evocative sound effects featured on Dragnet. While Friday and others investigate bloodstains in a suburban backyard, the listener hears a series of overlapping effects: a squeaking gate hinge, footsteps, a technician scraping blood into a paper envelope, the glassy chime of chemical vials, bird calls, and a dog barking in the distance. Sometimes the mundane intruded. When shows ran short, directors stalled for time. In "The Big Crime", Dragnet interrupted a scene while a real-estate agent spent a full minute answering and explaining a phone call, simply filling in time. The earliest radio programs ended each week with a remembrance of fallen officers who died on the job. The remembrance would be read over somber organ music, and would be officers from all over the country. This remembrance was eventually phased out. Topics and themes Scripts tackled topics ranging from the thrilling (murders, missing persons and armed robbery) to the mundane (check fraud and shoplifting), yet Dragnet made them all interesting due to fast-moving plots and behind-the-scenes realism. In "The Garbage Chute" (December 15, 1949), they even had a locked room mystery. Though tame by modern standards, Dragnet—especially on the radio—handled controversial subjects such as sex crimes and drug addiction with unprecedented and even startling realism. In one such example, Dragnet broke an unspoken (and rarely broached) taboos of popular entertainment in the episode ".22 Rifle for Christmas" which aired